Johnson Controls 050, Установка, эксплуатация и обслуживание

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JOHNSON CONTROLS
93
SECTION 5 – SEQUENCE OF OPERATION
FORM 100.50-NOM6
ISSUE DATE: 8/07/2017
5
• If the CO
2
level in the conditioned space is greater
than the
“IAQ SETPOINT”
plus 100 PPM the
outdoor air damper will open, but never more
than the “MAXIMUM IAQ ECONOMIZER POSI-
TION ”.
• If the CO
2
level in the conditioned space is less
than the “IAQ SETPOINT” minus 100 PPM the
outdoor air damper will close, but never less than
the “ ECONOMIZER MINIMUM POSITION” .
VENTILATION LOW AMBIENT MINIMUM
POSITION RESET
This feature allows the control to reset the minimum
ventilation setpoint to a lower value when the outdoor
temperature is cold. This assists in keeper the supply air
temperature from dropping because of a fixed ventila-
tion requirement when the outdoor temperature drops.
To use this feature the following parameters need to be
programmed:
•
“LOW AMBIENT ECONOMIZER SETPOINT”
–
this parameter is programmed under the ECONO-
MIZER/EXHAUST tab in the Simplicity PC soft-
ware package.
• “LOW AMBIENT ECONOMIZER MINIMUM
POSITION” – this parameter is programmed un-
der the ECONOMIZER/EXHAUST tab in the
Simplicity PC software package.
Sequence of Operation
When “LOW AMBIENT ECONOMIZER SETPOINT”
is programmed to 0 the feature is disabled. To use this
feature programmed this parameter to the outdoor tem-
perature at which you want the Simplicity Elite control
to switch to the
“LOW AMBIENT “ECONOMIZER
MINIMUM POSITION” . This parameter can be pro-
grammed between 0 and 60.0° F.
The parameter
“LOW AMBIENT ECONOMIZER
MINIMUM POSITION” needs to be programmed to
the minimum position of the damper when the temper-
ature is below the
“LOW AMBIENT ECONOMIZER
SETPOINT” . This parameter can be programmed be-
tween 0 and 99%. It would normally be programmed
less than the “ECONOMIZER MINIMUM POSITION”
parameter.
When the outdoor temperature is equal to or less than
the
“LOW AMBIENT ECONOMIZER SETPOINT”
the
Simplicity Elite control will set the minimum position
of the outdoor damper to the programmed “LOW AM-
BIENT ECONOMIZER MINIMUM POSITION” set-
ting.
When the outdoor temperature is 1.0° F or more above
the
“LOW AMBIENT ECONOMIZER SETPOINT”
the
Simplicity Control will set the minimum position of
the outdoor damper to the programmed “ECONOMIZ-
ER MINIMUM POSITION” setting.
EXHAUST FAN OPERATION
The Simplicity Elite control can be configured for the
following types of exhaust fan operation:
• On/Off Control Based On Outdoor Damper Posi-
tion.
• On/Off Control Based On Building Pressure.
• Modulating Damper with Fixed Speed Exhaust.
• Modulating Exhaust with a VFD.
On/Off Control Based on Outdoor Damper
Position
This exhaust option uses a standard motor without any
type of speed control and a barometric damper.
The following System Parameters must be programmed
through the Simplicity Elite control:
•
“POWER EXHAUST INSTALLED”
– must be
turned ON using Parameter 43 under the PRO-
GRAM key on the Simplicity Elite control board
or under the ECONOMIZER/EXHAUST tab in
the Simplicity PC software package.
• “ECONOMIZER DAMPER POSITION FOR
EXHAUST FAN TO TURN ON”
– must be pro-
grammed using Parameter 48 under the PRO-
GRAM key on the Simplicity Elite control board
or under the ECONOMIZER/EXHAUST tab in
the Simplicity PC software package.
• “ECONOMIZER DAMPER POSITION FOR
EXHAUST FAN TO TURN OFF” – must be pro-
grammed using Parameter 49 under the PRO-
GRAM key on the Simplicity Elite control board
or under the ECONOMIZER/EXHAUST tab in
the Simplicity PC software package.